Relay system, relay device, and non-transitory computer readable medium
a relay device and relay technology, applied in the field of relay systems and relay devices, can solve problems such as excess over the maximum number of pieces
Active Publication Date: 2022-04-26
FUJIFILM BUSINESS INNOVATION CORP
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- Abstract
- Description
- Claims
- Application Information
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Benefits of technology
The patent text relates to a method for controlling certain pieces of routing information in a relay device, which can serve as a destination for route advertisements. The control is performed to prevent the number of pieces of routing information from exceeding a predetermined limit, which is set based on factors like traffic and load on the network. This helps to avoid overloading network infrastructure and ensures efficient advertisement delivery.
Problems solved by technology
Accordingly, an attempt by a relay device to register a large number of pieces of routing information received in the route advertisement from multiple relay devices is likely to cause an excess over the maximum number of pieces of routing information in the routing table of the router.
However, aspects of the non-limiting embodiments are not required to overcome the disadvantages described above, and aspects of the non-limiting embodiments of the present disclosure may not overcome any of the disadvantages described above.
Method used
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[0016]Hereinafter, an exemplary embodiment of the present disclosure will be described on the basis of the drawings.
[0017]FIG. 1 is a diagram illustrating the overall configuration and the block configuration of a network system in this exemplary embodiment. FIG. 1 illustrates an example system configuration in which a relay system according to the present disclosure is applied to a network system including on-premise intranet systems 1 and a cloud service 2 that are connected via a virtual private network (VPN) and further including a monitoring server 3. Note that each intranet system 1 has the same configuration and thus is denoted by the same reference numeral. FIG. 1 illustrates the intranet systems 1 in two premises; however, the number of premises is not limited to this and may be one or more.
[0018]Each intranet system 1 includes an edge router 11 and a user terminal 12 that are connected via a network 13 such as a LAN. The edge router 11 is one of modes of a relay device hav...
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A relay system includes a first relay device, a second relay device, a controller, and a route advertisement unit. The second relay device receives route advertisement from the first relay device. If an excess of a number of pieces of routing information registered in a routing table of the second relay device over a maximum number of pieces of routing information registrable in the routing table is predicted, the controller controls a number of pieces of routing information that are to undergo the route advertisement from the first relay device to the second relay device. The route advertisement unit performs the route advertisement to the second relay device after excluding, from pieces of routing information registered in a routing table of the first relay device, a piece of routing information set not to undergo the route advertisement as a result of the control of the number of pieces of routing information by the controller.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2019-129411 filed Jul. 11, 2019.BACKGROUND(i) Technical Field[0002]The present disclosure relates to a relay system, a relay device, and a non-transitory computer readable medium.(ii) Related Art[0003]Routers have a routing function of transferring a received data packet to a network including the destination of the data packet. Each router has a routing table having pieces of routing information registered therein. In each piece of routing information, the network ID of a data destination and an address identifying the destination of a data packet are paired. The router refers to the routing table and thereby decides the transfer destination of the data packet (for example, Japanese Unexamined Patent Application Publication No. 2017-34321).[0004]The reporting of routing information held by a router to a different router is referred to a...
Claims
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IPC IPC(8): H04L12/46G06F15/173H04L12/707H04W60/00H04L45/00H04L47/10
CPCH04L45/54H04L47/10H04L45/245
Inventor SUGIYAMA, ICHIROKOBAYASHI, AYUMI
Owner FUJIFILM BUSINESS INNOVATION CORP